Combined door catch and lock.



D. DONALD.

COMBINED DOOR CATCH AND LOCK.

APPLICATION man SEPT. 10. 1913.

1,137,195., I Patented Apr. 27, 1915 D. Dona/a.

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THE Mama's PETERS cm, WASHINGTON, D. c.

DONALD DONALD, OF MASTERTON, NEW ZEALAND.

COMBINED DOOR CATCH AND LOCK.

Specification of Letters Patent. Patented 2'7, 1915,

Application filed September 10, 1913. Serial No. 789,096.

To all whom it may concern Be it known that I, DONALD DONALD,- a citizenof the Dominion of New Zealand,

residing at Masterton, in the Provincial District of Wellington, in theDominion of New Zealand, have invented certain new and-usefulImprovements in Combined Door Catches and Locks, ofwhich the followingis a specification.

This invention relates to looks used to secure doors of rooms, cupboardsand the like in a closed position. v

The invention consists in an improved construction of combineddoor-catch and lock, the details of which comprise improved means foroperating the catch and lock, improved means for preventing the catchand look when in its closed position from being operated, an improvedconstruction of bolt, and improved support for a spring.

The drawing herewith illustrates the in-' vention.

Figure 1, is a side elevation, Fig. 2, a sectional plan, and Fig. 3, asectional elevation showing the invention as used in a mortise in adoor. Fig. 4, is a perspective view of a key, and Fig. 5 a perspectiveview of a catch plate and buffer.

Referring to the drawing, the bolt 1 has a beveled end 2 adapted toenter a hole 3 in a catch plate 4 secured to the frame 5 of a door 6.The end 2 is integral with a shank 7 which has a slot or recess 8. Adisk 9 integral with the shank 7 is united to another disk 10 by a web11. The disks 9 and 10 fit the mortise 12 which is merely a hole madewith an auger.

The recess 8 of the shank 7 is fitted with a bridge piece 15 havingsides 16 and 17, the ends of which are forked to pass upon a pin 18, ortrunnions, to which a hook 19 is fixed or is integral. The hook iscapable of being rotated in the groove 8. The shank 7 is capable ofsliding in a casing 20, the diameter of which corresponds to thediameter of the disks 9 and 10. The casing has a flange 21. Screws 21passing through the flange 21 secure the casing to the door. The bottom8 of the recess 8 has slots 22 and 22, one side of each slot having abeveled edge 23. When the hook 19 is in engagement with either of theslots 22 and 22 the bolt 1 is prevented from sliding. When the hook isin engagement with the slot 22 the door is securely locked and cannot beopened until the hook 19 is released from the slot by means of thekey'24. When the hook is in engagement with. the slot 22 the bolt 1 isprevented from engaging the catch plate 4, and the door can then beopened without operating the handles 34 and 35. The hook 19 is operatedby means of the key 24, which is adapted to enter slots 25 formed inbushings 26 let into the door. The key has prongs 27 adapted to enterholes 28 provided in the ends of the pin 18, and has wards 29 which.correspond to the interstices 30 formed in the bushes 26. A spring 27,in compression between the end of the bolt and the bridge piece 15,projects the said end of the bolt until the disk 9 contacts with the endof the said casing.

The bolt is operated by means of handles 34 and 35 provided respectivelyon the inside and outside of the door. Each of these handles is madewith a thumbpiece 36, a'

finger grip piece 37, and an arm 38, which enters a slot 39 formed inthe web 11. The arm 38 of the handle 34 is higher in the slot 39 thanthe corresponding arm of the handle 37. The handles are pivoted uponpins 40 to the plates or medallions 41. The bolt 1 is drawn into themortise 12 by moving either of the handles to the position shown bydotted lines in Fig. 2.

A buffer 52 of rubber (see Fig. 5) projects through the catch plate 4and prevents the door from banging.

What I do claim and desire to secure by Letters Patent of the UnitedStates is 1. Latch mechanism comprising a sliding bolt supported uponthe door, a horizontal slot in said bolt, operating handles having armsfor engaging said horizontal slot, a vertical slot in said bolt, abridge piece inserted in said vertical slot and maintained in astationary position relatively to the door, a spring also located insaid vertical slot between the end of the bolt and the said bridgepiece, and means for locking said bolt against movement when in eitherits projected or withdrawn positions.

2. Latch mechanism comprising a sliding bolt supported upon the door,operating handles having arms for engaging said bolt so as to withdrawthe same, a vertical slot in said bolt, a bridge piece inserted in saidvertical slot and maintained in a stationary position relatively to thedoor, a spring located between the end of the bolt and said bridgepiece, a pivoted hook, operating within said bridge piece, and slots inthe bolt adapted to be engaged by said hook to prevent movement of thebolt when in its projected or withdrawn positions.

3. Latch mechanism comprising a sliding bolt supported upon the door,operating handles having arms for engaging said bolt so as to withdrawthe same, a vertical slot in said bolt, a bridge piece inserted in saidvertical slot and maintained in a stationary position relatively 'tothe'door, a spring located between the end of the bolt and said bridgepiece, a casing in which the forward end of said bolt slides, and a diskon the bolt adapted to engage the rear end'of said casing to limit thedistance to which the bolt 7 is projected.

4:. Latch mechanism comprising a sliding vertical slot and maintained ina stationary position relatively to the'door, a spring lo cated betweenthe end .of the bolt and said bridge piece, a pivoted hook, operatingwithin said bridge piece, adapted to engage a slot in the bolt, andholes in the pivot of said hook for the insertion'of the prongs of arey.

5. Latch mechanism comprising a sliding bolt supported upon the door, ahorizontal lateral slot in said bolt, operating handles pivoted onvertical axes and having arms for engaging said horizontal slot,a'vertical slot in said bolt, a bridge piece inserted in said verticalslot and having forked ends, a pivot pin carried by the door and passingthrough said forked ends, a spring located in said vertical slot'betweentheend ofthe.

bolt and said bridge piece, a pivoted hook carried on said pin andoperating within,

said bridge piece, slots in the bolt adapted to be engaged by said hookfor reta-iningthe;

In testimony whereof I haversigned my H. C. CAMPBELL, E. BIRRELL.

C'opies of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents,"

' r Washington, D. C.

